Finding the Fourth Proportional to 21,451.33, 32,181.29 and 7,411.87

Step by Step Solution

1. Step 1: Write the proportion equation
   21,451.33 : 32,181.29 = 7,411.87 : x
2. Step 2: Convert to fraction form
   21,451.33/32,181.29 = 7,411.87/x
3. Step 3: Cross multiply
   21,451.33x = 32,181.29 × 7,411.87
4. Step 4: Simplify right side
   21,451.33x = 238,523,537.91
5. Step 5: Solve for x
   x = 238,523,537.91/21,451.33
6. Step 6: Final answer
   x = 11,119.29